I was baling with my 1967 5000 SOS tonight and when I was roading it home I pulled over to let some cars pass. I put it in 9 and the engine loaded down and there was no forward motion. Dropped to 8 and got moving and then up to 10 the rest of the way home. Once I got in the yard I tried all the gears and 9-6-5-2-1-R1 all do the same thing; engine loads down and no motion. 70 degrees outside, engine temp normal, radiator clear of debris; tranny fluid level is full cold. What am I looking at here?
 
(quoted from post at 22:48:59 06/28/17) Acording to the trouble shooting chart the direct drive clutch does not apply [ mechanical ]

You must be looking at the early (*01 series) trouble shooting chart.

You are correct in that this is a DDC issue. However, Direct Drive clutches in SOS transmissions were never mechanically applied. This is either a hydraulic failure of some sort, or a failure of the DDC itself.
 
Perhaps my memory is failing, but according to your post you still have 3-4 -7-8-10 and R2 working. I would think the DDC would affect all gears. Per manual, check adjustment on all three bands and trouble shoot the sequencing valves.
 
My thought since all the gears function when cold, to do a pressure test of the three servos. Then run it til warm (when I lose those gears) and test the pressures again. Am I on the right track?
 
(quoted from post at 16:14:23 06/29/17) My thought since all the gears function when cold, to do a pressure test of the three servos. [b:bd22829a0b]Then run it til warm (when I lose those gears)[/b:bd22829a0b] and test the pressures again. Am I on the right track?

Are you saying that when you let it cool down all gears work again?
 
(quoted from post at 09:00:49 06/29/17) Perhaps my memory is failing, but according to your post you still have 3-4 -7-8-10 and R2 working. I would think the DDC would affect all gears. Per manual, check adjustment on all three bands and trouble shoot the sequencing valves.

Don't know whether your memory is failing, but for whatever reason your thinking is wrong on this one, TLC would affect all ratios, higher ones worse. DDC only affects direct drive rations as per failure on OP's transmission.
 
(quoted from post at 15:14:23 06/29/17) My thought since all the gears function when cold, to do a pressure test of the three servos. Then run it til warm (when I lose those gears) and test the pressures again. Am I on the right track?

Wouldn't help me any. I already know you need to track down the problem with your DDC.
 
(quoted from post at 14:15:28 06/29/17) Came out of VERY early 2-5000 service manuel. Some pages have 1964 print dates.

I'd say that manual isn't helpful there. At least not on the mechanical vs. hydraulic application of the DDC. My 5000 manual calls it hydraulic.

Anyone who knows the makeup of this transmission, understands wet clutch packs and thinks about it just a little would surely logically conclude this had to be other than mechanical application even without a cheat sheet (book).
 
Larry,
I'm going to ask you to speak real slowly because I've never been inside one of these SOS transmissions. I'm not sure in your replies if you were
replying to me or Sean in PA. Would you please tell me the steps you would take to remedy this? It sounds like your thinking is the direct drive
clutch pack itself and not hydraulic pressure, therefore it's time to split the tractor and replace the bad clutch components? Your practical
experience would be helpful here, and just my luck it is still haying season.

Thanks. Tim
 
(quoted from post at 21:56:27 06/29/17) I'm going to ask you to speak real slowly because I've never been inside one of these SOS transmissions.

The speed at which I speak (type) is of little consequence. The speed at which you comprehend is of the essence!

I'm not sure in your replies if you were
replying to me or Sean in PA.

At no place in this thread did I reply to Sean in PA. I did quote and challenge a couple others, but all was for your benefit. Those I quoted or their sources were in error, at least in part, in what they said.

Would you please tell me the steps you would take to remedy this?

Because the 5000 control valve is on the bottom of the transmission rather than the top like all other SOS transmissions are, it's a bit more difficult. The first thing I'd do, sensing you know little about this transmission, is get a shop manual and study all procedures I was going to face in remedying this situation. Short of that let someone do it who knows what they're doing.

After having done that, I'd remove the control valve following all R&R procedures to a T. I'd then use compressed air in the Direct Drive Clutch (DDC) bore in the distributor plate (this is the part the control valve bolts to). If you hear a clunk, your DCC is engaging. If you hear much of a hiss and no clunk there's a leak in the circuit you'll need to find and repair. There are multiple possibilities for leaks, including the control valve you removed.

It sounds like your thinking is the direct drive
clutch pack itself and not hydraulic pressure, therefore it's time to split the tractor and replace the bad clutch components?

Whoa! There are several places where leaks could affect the application of the DDC. I said it could be the DDC. I also said it could be a leak in the hydraulic circuit that applies the DDC.

Your practical
experience would be helpful here, and just my luck it is still haying season.

Thanks. Tim

You still have as many speeds as the pre-65 Fords with the 5 speed transmission. Were it me in haying season, I'd limp it through the season on what ratios work and then tackle repairs.
 

Oops! I wasn't thinking fast enough. :lol:

Since your DDC engages cold, I would suggest you have a leak in the DDC hydraulic circuit that only shows up significantly as the oil thins. This may be the clutch piston seals themselves. It also could be other seals in the circuit, cracked piping, etc.
 

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